... 55ºC-70ºCHandy Warmer,it has a light surface,catch only by one hand,good quality and treatment, ... warm and health.also be sent Elders.This handy warmer can be work to keep warm 20-24 ... oil overbrim from barrel,please clean it5.please use lighter to ignition,first must touch catalyst about ten ... used soon when you added oil.Put handy warmer into clothbag when use over. sell no.006 steel hand warmer